Engine fuel vaporizer



April 22, 1947. P. E. STILLE ENGINE FUEL VAPORIZER Filed Sept. 15, 1945 5 Sheets-Sheet 1 Inventor Paw/Z E Sizzle B] and April 22, 1947. P. E. STl-LLE ENGINE FUEL VAPORI ZER Filed Sept. 15,1945 3 Sheets-Sheet 2 April 22, 1947. P. E. STILLE ENGINE FUEL VAPORIZER Filed Sept. 15, 1945 s Sheets-Sheet s J Z N" Inventor Patented Apr. 22,1947

UNITED STATES, PATENT OFFICE Application September 15, 1943, Serial No. 502,547

1 Claim. 1

The present invention relates to new and useful improvements in fuel Vaporizers for internal combustion engines, and has for one of its important objects to provide, in a manner as hereinafter set forth, novel means for recovering from the exhaust fuel values or fumes which would be otherwise wasted and mixin them with the ingoing charge at a point between the carburetor and the intake manifold.

Another very important object of the invention is to provide a vaporizer of the aforementioned character comprising a unique construction and arrangement for mixing with the ingoing charge filtered air, oil vapors and water vapors in addition to the exhaust fumes.

Still another very important object of the invention is to provide an engine fuel vaporizer of the character described comprising novel means for controlling or regulating the aforementioned air, vapors and fumes.

Other objects of the invention are to provide an engine fuel vaporizer which will be comparatively simple in construction, strong, durable, highly efiicient and reliable in operation, and which may be manufactured and installed at low cost.

All of the foregoing, and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is an elevational view, showing a vaporizer constructed in accordance with the present invention installed between the carburetor and the intake manifold of an engine.

Figure 2 is a top plan view of the device.

Figure 3 is a plan view of the device with an end portion thereof broken away in section to expose the control or regulating means.

Figure 4 is a view in vertical longitudinal section through the device, taken substantially on the line 4-4 of Figure 2.

Figure 5 is an enlarged, fragmentary view through the control means.

Figure 6 is a perspective view of the reciprocating valve member.

Figure 7 is a plan view of a slight modification.

Referring now to the drawing in detail, it will be seen that reference numeral i designates a plate of suitable material which is adapted to.be

' mounted between the carburetor 2 and the intake manifold 3 of an engine. Toward this end, the plate I has formed therein openings 4 which accommodate the securing bolts v5. The plate I is further provided with an opening 6 for the passage of fuel from the carburetor 2 to the manifold 3.

The plate I further includes a laterally enlarged end portion I. Extending into the plate I from the end 1 thereof and communicating with the opening 6 are a plurality of ducts 8. Pipes 9 are connected, at one end, to the plate I and communicate with the ducts 8. As illustrated to advantage in Figure 1 of the drawing, one of the pipes 9 is connected to the usual air cleaner ID of the engine. Another of the pipes is to be connected to the exhaust manifold or pipe of the en gine, this pipe havin interposed therein a filter II. Another of the pipes 9 is to be connected to the radiator of the vehicle at the top thereof for receiving water vapors therefrom. The remaining pipe 9 is to be connected to the tappet cover of the engine for drawing off oil vapors.

Extending transversely through the end portion I of the plate I is a bore I2 which intersects the ducts 3. Removable screw plugs I3 close the ends of the bore I2. Mounted for reciprocation in the bore I2 for controlling the ducts 8 is a valve member which is designated generally by reference numeral I 4. In the embodiment shown, the valve member I4 includes a stem I5 which is provided, at spaced points, with cores I6.

A coil spring I I in one end portion of the bore l2 yieldingly urges the valve l4 toward closed position. One end portion of the stem I 5 extends slidably through the adjacent plug I3. An operating lever I8 is pivotally mounted on the plate I and engaged with the exposed end of the stem I5 for opening the valve I4 against the tension of the coil spring I1.

It is thought that the operation of the device will be readily apparent from a consideration of the foregoing. Briefly, to cause the device to function, the valve I 4 is actuated against the tension of the coil spring I I for opening the ducts 8. When this occurs, the suction created by the engine draws air, oil and water vapors, and exhaust fumes into the ingoing fuel from the carburetor 2 through the pipes 9.

The modification illustrated in Figure 7 of the drawing is for engines having dual carburation. Toward this end, a plate I9 is provided having a pair of fuel openings 21! therein. Communicating with each of the openings 20 is a set of pipes ZI which are similar to the pipes 9. Also, control valves 22, similar to the valve I4, are provided for each opening 20.

It is believed that the. many advantages of; an

engine fuel vaporizer constructed in accordance with the present invention will be readily understood, and although preferred embodiments of the device are as illustrated and described, it is to be understood that further modifications and changes in the details of construction may be resorted to which will fall within the scope of the invention as claimed.

That is claimed is:

A device of the character described comprising a flat plate formed with a plurality of ducts extending longitudinally in the plate with their outer ends opening through the outer side edge face of the plate, the outer end of said plate being formed with a bore extending transversely of the plate and intersecting said ducts, removable plugs closing ends of said bore, a rod extending longitudinally in said bore and projecting outwardly through one plug, blocks for closing the ducts firmly mounted upon said rod in spaced relation to each other and fitting snugly in the bore, a spring in said bore having one end abutting a plug and its other end abutting. a block and urging the rod longitudinally to a normal position disposing the blocks in a closed position across the ducts, and an operating member engaging the outer end of the rod.

PAUL E. STILLE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,609,234 Wilson Nov. 30, 1926 Re. 19,811 Moore Jan. 7, 1936 1,118,365 Johnston Nov. 24, 1914 1,619,082 Marsh Mar. 1, 1927 2,005,621 Kowalski June 18, 1935 2,158,819 Gianatasio May 16, 1939 2,152,028 Church Mar. 28, 1939 1,432,751 Hallett Oct. 24, 1922 2,220,653 Jeffrey Nov. 5, 1940 1,430,803 Dunn et a1 Oct. 3, 1922 1,630,242 Ross May 24, 1927 1,816,345 Secor July 28, 1931 

